I haven’t been able to find a thread on my exact situation so I thought I’d make my own but my tegu (male) is about seven months old, we got him a little over a month ago from one of my local reptile stores- from my understanding they did not handle him at all and when they sold him to us they called him a “psycho” . He is actaully not too bad in my opinion and me and my boyfriend have been working with him extensively. He never seems to bite out of aggression but he does come up and nudge you sometimes and sniffs you and inevitably bites. I don’t want to pull away as I don’t want him to understand that this behaviour can make us stop touching him or leave him alone but he is about 2 1/2 feet long so his bites although not aggressive can still be very hard and he typically does it a few times before walking away. He also has lunged a few times at me for example we are trying ti harness train him so I left the harness in his cage and as I was removing my hand he lunged all the way into my lap huffing and puffing before crawling back into his cage. I’m not sure if this is aggression or not. Sorry for the loads of information but I wanna make sure your as well informed as possible.